**Core Concept**
Right-sided infective endocarditis (R-IE) typically involves the tricuspid valve, often as a result of intravenous drug use or central venous catheters. The pathophysiology of R-IE is characterized by the formation of vegetations on the tricuspid valve, leading to potential complications such as septic pulmonary emboli and heart block.

**Why the Correct Answer is Right**
The tricuspid valve is the most common valve affected in R-IE, whereas left-sided IE more frequently involves the mitral valve. The right heart's lower pressures and less complex valve structure contribute to the predilection for R-IE. Additionally, R-IE is more commonly associated with pulmonary emboli due to the septic emboli from the right heart.

**Why Each Wrong Option is Incorrect**
**Option A:** This statement is incorrect because R-IE frequently involves the tricuspid valve, not the aortic valve, which is more commonly affected in left-sided IE.
**Option B:** This statement is incorrect because R-IE typically presents with symptoms such as fever, chills, and right-sided heart failure signs, not left-sided heart failure signs like mitral regurgitation.
**Option C:** This statement is incorrect because R-IE is not typically associated with the same high risk of embolic events as left-sided IE, particularly not to the brain or aorta.
**Option D:** This statement is incorrect because while R-IE can involve the pulmonary valve, it is less common and typically occurs in the context of a congenital heart defect.

**Clinical Pearl / High-Yield Fact**
Right-sided IE often presents with subtle symptoms, and prompt diagnosis requires a high index of suspicion, especially in intravenous drug users or patients with central venous catheters.

**Correct Answer: A. This statement is incorrect because R-IE frequently involves the tricuspid valve, not the aortic valve.**